Member of the Royal College of Surgeons of England and Royal Society of Medicine, former president of the Huntingdon's Disease Association, the Society for the Advancement of Anaesthesia in Dentistry, the Arterial Health Foundation, of the Metropolitan branch of the British Dental Association and practising dentist for forty years

Chair of the London 2012 Olympic Park Legacy Company, former Chief Executive of Good Practice Limited, Managing Director (Social Infrastructure and Development) of Royal Bank of Canada Capital Markets, Chairman of Irvine Bay Urban Regeneration Company and president of the Epilepsy Action

Former deputy leader of the Ulster Unionist Party; the only active politician to have served in all levels of government in Northern Ireland, from local council, the Parliament of Northern Ireland, Westminster, Europe, all previous failed Assemblies and Conventions and the current incarnation of the Assembly

Professor of Zoology at the University of Oxford, former chair of the Food Standards Agency, member of the committee on climate change and chair of adaptation sub-committee, chair of the Royal Society Science Policy Advisory Group

Centennial Professor in the Centre for the Study of Global Governance at the London School of Economics, Emeritus Professor of Political Theory at the University of Hull, Emeritus Professor of Political Philosophy at the University of Westminster

Under section 137(3) of the Constitutional Reform Act 2005, holders of certain judicial offices who are peers are disqualified from sitting and voting in the House of Lords while in office.[12] The following peers are currently subject to this provision.

Under section 1 of the House of Lords Reform Act 2014, peers may permanently resign their membership of the house.[15] The following peers have exercised that right since the Act came into force in August 2014 and are either still living or have died since December 2015:[16]

Additionally, the following peers elected to retire from the House of Lords in accordance with the Resolution of the House of 27 June 2011, under which peers were granted the option to signal their intention to voluntarily retire and have their service recognised in the House and marked informally outside the House.[22][23]

Under section 2 of the House of Lords Reform Act 2014, peers who fail to attend any sittings of the house during a whole parliamentary session cease to be members of the House at the start of the next session. The following peers have been subject to this provision since the Act came into force and are still living or have died since December 2015:[24]